Title: Some users may be unable to search mailbox or Address Book content in Exchange Online across connection methods User impact: Users may be unable to search mailbox or Address Book content in Exchange Online across connection methods. Current status: We've received support cases indicating that some users can't search mailbox or Address Book content in Exchange Online across connection methods. We're reviewing our service telemetry to isolate the root cause of impact and develop a remediation strategy. Scope of impact: Some users attempting to search mailbox or Address Book content in Exchange Online across connection methods may be affected. This section may be updated as our investigation progresses. Next update by: Thursday, September 24, 2026, at 1:00 AM UTC
Started
03:00 UTC
Duration
Lasted 12d 14h
Source
IsDown
Next time
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Affected components: Exchange Online
What happened?
Title: Some users may be unable to search mailbox or Address Book content in Exchange Online across connection methods User impact: Users may be unable to search mailbox or Address Book content in Exchange Online across connection methods. Current status: We've received support cases indicating that some users can't search mailbox or Address Book content in Exchange Online across connection methods. We're reviewing our service telemetry to isolate the root cause of impact and develop a remediation strategy. Scope of impact: Some users attempting to search mailbox or Address Book content in Exchange Online across connection methods may be affected. This section may be updated as our investigation progresses. Next update by: Thursday, September 24, 2026, at 1:00 AM UTC
